CN214013861U - Non-full-phase protection device of circuit breaker - Google Patents
Non-full-phase protection device of circuit breaker Download PDFInfo
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- CN214013861U CN214013861U CN202022571016.1U CN202022571016U CN214013861U CN 214013861 U CN214013861 U CN 214013861U CN 202022571016 U CN202022571016 U CN 202022571016U CN 214013861 U CN214013861 U CN 214013861U
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Abstract
The utility model discloses a non-complete phase protection device of circuit breaker, include: the device comprises a processor, an acquisition module, an I/O debugging module, an output module and a power supply; the processor is respectively connected with the acquisition module, the I/O debugging module, the output module and the power supply; the acquisition module comprises: the circuit breaker auxiliary normally open contact, the circuit breaker auxiliary normally closed contact and the optical coupler isolator; the output module includes: the relay unit, the state monitoring output unit and the alarm signal output unit; the relay unit includes: relay and protector action contacts; the state monitoring output unit includes: a device power-off contact and a device abnormal contact; the alarm signal output unit includes: the relay operating contacts, the first pair of protection operating output contacts, the second pair of protection operating output contacts, the third pair of protection operating output contacts and the fourth pair of protection operating output contacts. The utility model discloses can simply check up the flow, improve the not complete looks protection action correct rate.
Description
Technical Field
The utility model relates to a circuit breaker non-full phase protection technical field especially relates to a circuit breaker non-full phase protection device.
Background
The non-full-phase protection of the circuit breaker with the voltage class of 220kV and above is realized by adopting the body non-full-phase protection of the circuit breaker. The outdoor exchange control cabinet has relatively poor operation condition, and a non-full-phase protection control loop is interfered more, so that the problem of protection misoperation is easily caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a circuit breaker non-complete phase protection device to solve prior art because outdoor collection accuse cabinet operating condition is relatively poor, the interference that non-complete phase protection control circuit received is more, leads to the problem of protection maloperation easily.
The embodiment of the utility model discloses following technical scheme:
a circuit breaker non-full phase protection device comprising: the device comprises a processor, an acquisition module, an I/O debugging module, an output module and a power supply; the processor is respectively connected with the acquisition module, the I/O debugging module, the output module and the power supply; the acquisition module comprises: the circuit breaker auxiliary normally open contact, the circuit breaker auxiliary normally closed contact and the optocoupler isolator are connected, wherein the circuit breaker auxiliary normally open contact and one end of the circuit breaker auxiliary normally closed contact are connected with the positive electrode of the power supply, the other end of the circuit breaker auxiliary normally open contact is connected with the processor, and the other end of the circuit breaker auxiliary normally closed contact is connected with the processor in series through the optocoupler isolator; the output module includes: the relay unit, the state monitoring output unit and the alarm signal output unit; the relay unit includes: the protection device action contact is connected with the processor, two ends of the protection device action contact are respectively connected with one end of the relay and the negative electrode of the power supply, and the other end of the relay is connected with the positive electrode of the power supply; the state monitoring output unit includes: the processor is respectively connected with the device power-off contact and the device abnormal contact; the alarm signal output unit includes: the processor is respectively connected with the protection device action contact, the first pair of protection action output contacts, the second pair of protection action output contacts, the third pair of protection action output contacts and the fourth pair of protection action output contacts.
Further, the state monitoring output unit further includes: the device operation signal lamp and the device alarm signal lamp are both connected with the processor.
Further, the alarm signal output unit further includes: a protective action light connected with the processor.
Further, the non-full-phase protection device of the circuit breaker further comprises: a display connected with the I/O debugging module.
Further, the non-full-phase protection device of the circuit breaker further comprises: a memory coupled with the processor.
Further, the circuit breaker auxiliary normally open contact includes: a looks normally open contact, B looks normally open contact and C looks normally open contact, the opto-isolator includes: first opto-coupler isolator, second opto-coupler isolator and third opto-coupler isolator, the one end of A looks normally open contact the one end of B looks normally open contact with the one end of C looks normally open contact is connected respectively the positive pole of power, the other end of A looks normally open contact with establish ties between the treater first opto-coupler isolator, the other end of B looks normally open contact with establish ties between the treater second opto-coupler isolator, and, the other end of C looks normally open contact with establish ties between the treater third opto-coupler isolator.
Further: the other end of A looks normally open contact with establish ties first resistance between the first opto-coupler isolator, the other end of B looks normally open contact with establish ties the second resistance between the second opto-coupler isolator, the other end of C looks normally open contact with establish ties the third resistance between the third opto-coupler isolator.
Further, the circuit breaker auxiliary normally closed contact includes: a looks normally closed contact, B looks normally closed contact and C looks normally closed contact, the opto-isolator includes: fourth opto-isolator, fifth opto-isolator and sixth opto-isolator, the one end of A looks normally closed contact the one end of B looks normally closed contact with the one end of C looks normally closed contact is connected respectively the positive pole of power, the other end of A looks normally closed contact with establish ties between the treater fourth opto-isolator, the other end of B looks normally closed contact with establish ties between the treater fifth opto-isolator, and, the other end of C looks normally closed contact with establish ties between the treater sixth opto-isolator.
Further: the other end of A looks normally closed contact with establish ties fourth resistance between the fourth opto-isolator, the other end of B looks normally closed contact with establish ties fifth resistance between the fifth opto-isolator, the other end of C looks normally closed contact with establish ties sixth resistance between the sixth opto-isolator.
Further: the device power-off contact, the device abnormal contact, the protection device action contact, the relay action contact, the first pair of protection action output contacts, the second pair of protection action output contacts, the third pair of protection action output contacts and the fourth pair of protection action output contacts are all normally open contacts.
The utility model discloses circuit breaker non-all-phase protection device can improve the action correct rate of non-all-phase protection, and simple and easy check-up flow need not to consume plenty of time and energy, provides the powerful foundation for failure analysis simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic circuit diagram of a non-all-phase protection device for a circuit breaker according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a non-complete phase protection device of circuit breaker disposes in 220kV and above voltage class circuit breaker body department for carry out non-complete phase protection to the circuit breaker. As shown in fig. 1, the non-full-phase protection device of the circuit breaker comprises: the device comprises a processor 1, an acquisition module 2, an I/O debugging module 3, an output module 4 and a power supply. The processor 1 is respectively connected with the acquisition module 2, the I/O debugging module 3, the output module 4 and the power supply. Specifically, the processor 1 is connected with a positive electrode KM + and a negative electrode KM-of a power supply, and the power supply is responsible for supplying power. The processor 1 is composed of a single chip microcomputer and a clock chip, and the single chip microcomputer and the clock chip are used as core management control, so that intelligent and accurate control can be realized, and the running reliability of equipment is improved. The I/O debugging module 3 can check the time according to the fixed value list, and if the time needs to be changed, a worker can operate through the I/O debugging module 3. The core components of the whole device can be packaged by a metal shell, so that a series of problems of protection misoperation, operation refusal and the like caused by joint aging and adhesion due to special outdoor operation environment are avoided.
Specifically, the acquisition module 2 includes: the circuit breaker auxiliary normally open contact, the circuit breaker auxiliary normally closed contact and the opto-isolator. One end of the breaker auxiliary normally open contact and one end of the breaker auxiliary normally closed contact are used for being connected with the positive electrode KM + of a power supply, the other end of the breaker auxiliary normally open contact is connected with the processor 1, and an optical coupling isolator is connected between the other end of the breaker auxiliary normally closed contact and the processor 1 in series. The optical coupler isolator is composed of a light emitting device and a light sensitive device, after the optical coupler isolator receives signals, the light emitting device of the optical coupler isolator emits light, the light sensitive device of the optical coupler isolator receives light to generate photocurrent, and the optical coupler isolator outputs corresponding electric signals to the processor 1. Through setting up the opto-isolator, make input and output realize electrical isolation completely for non-full phase protection device job stabilization has strengthened non-full phase protection device's interference killing feature, avoids leading to the fact the condition of protection maloperation because of the volume of opening sudden change or input unstability.
Specifically, the circuit breaker is three-phase circuit breaker, and then the supplementary normally open contact of circuit breaker includes: the a-phase normally open contact TWA, the B-phase normally open contact TWB, and the C-phase normally open contact TWC. One end of the A-phase normally-open contact TWA, one end of the B-phase normally-open contact TWB and one end of the C-phase normally-open contact TWC are respectively connected with the positive electrode KM + of the power supply. The opto-isolator includes: a first opto-isolator OC1, a second opto-isolator OC2 and a third opto-isolator OC 3. A first optical coupler isolator OC1 is connected in series between the other end of the A-phase normally open contact and the processor 1, a second optical coupler isolator OC2 is connected in series between the other end of the B-phase normally open contact and the processor 1, and a third optical coupler isolator OC3 is connected in series between the other end of the C-phase normally open contact and the processor 1.
Preferably, a first resistor R1 is connected in series between the other end of the a-phase normally open contact TWA and the first optocoupler isolator OC1, a second resistor R2 is connected in series between the other end of the B-phase normally open contact TWB and the second optocoupler isolator OC2, and a third resistor R3 is connected in series between the other end of the C-phase normally open contact TWC and the third optocoupler isolator OC 3. The current passing through can be limited through the series resistance, avoids the current too big to cause danger.
The circuit breaker auxiliary normally closed contact includes: a phase normally closed contact TWJA, a phase normally closed contact TWJB, and a phase normally closed contact TWJC. One end of the A-phase normally closed contact TWJA, one end of the B-phase normally closed contact TWJB and one end of the C-phase normally closed contact TWJC are connected with the positive electrode KM + of a power supply respectively. The opto-isolator includes: a fourth opto-isolator OC4, a fifth opto-isolator OC5 and a sixth opto-isolator OC 6. A fourth optical coupler isolator OC4 is connected between the other end of the A-phase normally closed contact TWJA and the processor 1 in series, a fifth optical coupler isolator OC5 is connected between the other end of the B-phase normally closed contact TWJB and the processor 1 in series, and a sixth optical coupler isolator OC6 is connected between the other end of the C-phase normally closed contact TWJC and the processor 1 in series.
Preferably, a fourth resistor R4 is connected in series between the other end of the a-phase normally closed contact TWJA and the fourth optical coupler isolator OC4, a fifth resistor R5 is connected in series between the other end of the B-phase normally closed contact TWJB and the fifth optical coupler isolator OC5, and a sixth resistor R6 is connected in series between the other end of the C-phase normally closed contact TWJC and the sixth optical coupler isolator OC 6. The current passing through can be limited through the series resistance, avoids the current too big to cause danger.
The output module 4 includes: a relay unit 41, a state monitoring output unit 42, and an alarm signal output unit 43.
The relay unit 41 may electrically excite a high-power relay to perform corresponding control. Specifically, the relay unit 41 includes: relay JZ and protection device actuation contact TW. The relay JZ of the embodiment of the invention is a high-power relay, and the power of the relay is more than 5W. The protection device operating contact TW is connected to the processor 1. Two ends of the protection device action contact TW are respectively connected with one end of the relay JZ and the negative pole KM-of the power supply. The protection device operating contact TW is a normally open contact. The other end of the relay JZ is connected with the positive electrode KM + of a power supply.
The state monitoring output unit 42 can output the device power-off contact and the device abnormal contact so that the user can master the real-time operation condition of the device. Specifically, the state monitoring output unit 42 includes: a device power-off contact LP and a device abnormal contact DA. The processor 1 is connected with the device power-off contact LP and the device abnormal contact DA respectively. The device power-off contact LP and the device abnormal contact DA are normally open contacts. The device power-off contact LP and the device abnormal contact DA can be connected to the interval measurement and control device, and remote real-time monitoring is achieved.
Preferably, the state monitoring output unit 42 further includes: a device operation signal lamp and a device alarm signal lamp. The device operation signal lamp and the device alarm signal lamp can be arranged on the device panel. The device operation signal light is connected with the processor 1. If the power supply of the device is powered off or the device is locked in operation, the device operation lamp is turned off to prompt the user. The device alarm signal lamp is connected with the processor 1. If the internal abnormality and fault conditions of the device occur, the device alarm signal lamp is lightened to prompt the user.
The alarm signal output unit 43 can output an alarm signal to enable a user to check corresponding alarms and master the real-time operation condition of the device. Specifically, the alarm signal output unit 43 includes: the relay operating contact JZP, the first pair of protection operating output contacts TW1, the second pair of protection operating output contacts TW2, the third pair of protection operating output contacts TW3, and the fourth pair of protection operating output contacts TW 4. The processor 1 is connected to a first pair of protection operation output contacts TW1, a second pair of protection operation output contacts TW2, a third pair of protection operation output contacts TW3, and a fourth pair of protection operation output contacts TW4, respectively, and the relay JZ is connected to a relay operation contact JZP. The relay contact JZP, the first pair of protection operation output contacts TW1, the second pair of protection operation output contacts TW2, the third pair of protection operation output contacts TW3, and the fourth pair of protection operation output contacts TW4 are all normally open contacts. The relay action contact JZP can be connected to the three-phase trip circuit of the circuit breaker to realize the non-full-phase protection action to trip the circuit breaker when the non-full-phase fault occurs. If the input contact signal meets the action logic condition of the non-full-phase protection, the processor 1 controls the protection device to operate and trip after the set rated time delay, the protection device operates the contact TW, the first pair of protection operation output contacts TW1, the second pair of protection operation output contacts TW2, the third pair of protection operation output contacts TW3 and the fourth pair of protection operation output contacts TW4 to be closed, and meanwhile, the relay JZ is controlled to be electrically excited, so that the relay operation contact JZP is closed, and the circuit breaker is tripped. The second pair of protection action output contacts TW2 can be connected to the interval measurement and control device to realize remote real-time monitoring. The fourth pair of protection operation output contacts TW4 can be connected to a fault recording system, thereby implementing reading and analysis of remote fault information. The first protection operation output contact TW1 and the third protection operation output contact TW3 can be used as backup contacts to connect other electrical devices as needed.
Preferably, the alarm signal output unit 43 further includes: the action lamp is protected. The protective action light may be provided on a panel of the device. The protective action lamp is connected with the processor 1. When the alarm signal output unit 43 outputs four pairs of trip alarm signals, the protection action lamp is simultaneously lighted to prompt the user.
Preferably, the non-full-phase protection device for the circuit breaker further comprises: a display 5. The display 5 is connected with the I/O debugging module 3 and used for displaying data acquired by the device, such as action phase, action time, the position switching value of the circuit breaker before and after action, voltage, current, power during action of the power relay and the action power of the power relay, and the like, and the verification step is simple, the verification data is accurate, and a large amount of time and energy are not required to be consumed.
Preferably, the non-full-phase protection device for the circuit breaker further comprises: a memory 6. The memory 6 is connected with the processor 1 and is used for storing data acquired by the device, such as action phase, action time, breaker position switching value before and after action, voltage, current, power when the power relay is in action, and whether the action power of the power relay is satisfied, and the like, and provides powerful analysis basis for fault analysis.
The non-full-phase protection device of the circuit breaker has the following working process:
when the non-full-phase protection device of the circuit breaker normally operates, the acquisition module 2 acquires state signals of normally open auxiliary contacts and normally closed auxiliary contacts at the three-phase position of the on-site circuit breaker A, B, C and inputs the state signals into the processor 1. When the three-phase positions of the circuit breakers are inconsistent (namely, A, B, C three-phase circuit breakers have any one-phase normally-open auxiliary contact and any other-phase normally-closed auxiliary contact which are closed), the processor 1 judges that the input contact signal meets the action logic condition of non-full-phase protection, after the set rated delay, the protection device acts, and the protection device action contact TW, the first pair of protection action output contacts TW1, the second pair of protection action output contacts TW2, the third pair of protection action output contacts TW3 and the fourth pair of protection action output contacts TW4 are all closed. Because the protection device action contact TW is closed, the relay JZ is electrified and excited, and the relay action contact JZP of the relay JZ is closed, so that the three phases of the circuit breaker are disconnected. The alarm signal output unit 43 outputs four pairs of trip alarm signals, two pairs of which have a holding contact (i.e., remain active after actuation) and two pairs of which do not have a holding contact (i.e., do not need to remain active after actuation), while illuminating a protective action lamp to prompt the user. When the non-full-phase protection device operates abnormally, the processor 1 controls the abnormal contact DA of the device to be closed, and meanwhile, the device alarm signal lamp is lightened to prompt a user. When the non-full-phase protection device loses power, the processor 1 controls the device power-losing contact LP to be closed, the power is transmitted to the monitoring device through the measurement and control device, and meanwhile, the processor 1 controls the device operation signal lamp to be turned off so as to prompt a user. The memory 6 may store the monitoring results. The I/O debugging module 3 may output the monitoring result to the display 5 for display.
To sum up, the utility model discloses circuit breaker non-all-phase protection device can improve the action correct rate of non-all-phase protection, and simple and easy check-up flow need not to consume plenty of time and energy, provides the powerful foundation for failure analysis simultaneously.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A circuit breaker non-full phase protection device, comprising: the device comprises a processor, an acquisition module, an I/O debugging module, an output module and a power supply; the processor is respectively connected with the acquisition module, the I/O debugging module, the output module and the power supply;
the acquisition module comprises: the circuit breaker auxiliary normally open contact, the circuit breaker auxiliary normally closed contact and the optocoupler isolator are connected, wherein the circuit breaker auxiliary normally open contact and one end of the circuit breaker auxiliary normally closed contact are connected with the positive electrode of the power supply, the other end of the circuit breaker auxiliary normally open contact is connected with the processor, and the other end of the circuit breaker auxiliary normally closed contact is connected with the processor in series through the optocoupler isolator;
the output module includes: the relay unit, the state monitoring output unit and the alarm signal output unit; the relay unit includes: the protection device action contact is connected with the processor, two ends of the protection device action contact are respectively connected with one end of the relay and the negative electrode of the power supply, and the other end of the relay is connected with the positive electrode of the power supply; the state monitoring output unit includes: the processor is respectively connected with the device power-off contact and the device abnormal contact; the alarm signal output unit includes: the processor is respectively connected with the protection device action contact, the first pair of protection action output contacts, the second pair of protection action output contacts, the third pair of protection action output contacts and the fourth pair of protection action output contacts.
2. The non-full-phase protection device of a circuit breaker according to claim 1, wherein the state monitoring output unit further comprises: the device operation signal lamp and the device alarm signal lamp are both connected with the processor.
3. The non-full-phase protection device of a circuit breaker according to claim 1, wherein the alarm signal output unit further comprises: a protective action light connected with the processor.
4. The circuit breaker non-full phase protection device of claim 1, further comprising: a display connected with the I/O debugging module.
5. The circuit breaker non-full phase protection device of claim 1, further comprising: a memory coupled with the processor.
6. The circuit breaker non-full phase protection device of claim 1, wherein the circuit breaker auxiliary normally open contact comprises: a looks normally open contact, B looks normally open contact and C looks normally open contact, the opto-isolator includes: first opto-coupler isolator, second opto-coupler isolator and third opto-coupler isolator, the one end of A looks normally open contact the one end of B looks normally open contact with the one end of C looks normally open contact is connected respectively the positive pole of power, the other end of A looks normally open contact with establish ties between the treater first opto-coupler isolator, the other end of B looks normally open contact with establish ties between the treater second opto-coupler isolator, and, the other end of C looks normally open contact with establish ties between the treater third opto-coupler isolator.
7. The circuit breaker non-full-phase protection device of claim 6, wherein: the other end of A looks normally open contact with establish ties first resistance between the first opto-coupler isolator, the other end of B looks normally open contact with establish ties the second resistance between the second opto-coupler isolator, the other end of C looks normally open contact with establish ties the third resistance between the third opto-coupler isolator.
8. The circuit breaker open-phase protection device of claim 1, wherein the circuit breaker auxiliary normally closed contacts comprise: a looks normally closed contact, B looks normally closed contact and C looks normally closed contact, the opto-isolator includes: fourth opto-isolator, fifth opto-isolator and sixth opto-isolator, the one end of A looks normally closed contact the one end of B looks normally closed contact with the one end of C looks normally closed contact is connected respectively the positive pole of power, the other end of A looks normally closed contact with establish ties between the treater fourth opto-isolator, the other end of B looks normally closed contact with establish ties between the treater fifth opto-isolator, and, the other end of C looks normally closed contact with establish ties between the treater sixth opto-isolator.
9. The circuit breaker non-full phase protection device of claim 8, wherein: the other end of A looks normally closed contact with establish ties fourth resistance between the fourth opto-isolator, the other end of B looks normally closed contact with establish ties fifth resistance between the fifth opto-isolator, the other end of C looks normally closed contact with establish ties sixth resistance between the sixth opto-isolator.
10. The circuit breaker non-full-phase protection device of claim 1, wherein: the device power-off contact, the device abnormal contact, the protection device action contact, the relay action contact, the first pair of protection action output contacts, the second pair of protection action output contacts, the third pair of protection action output contacts and the fourth pair of protection action output contacts are all normally open contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022571016.1U CN214013861U (en) | 2020-11-09 | 2020-11-09 | Non-full-phase protection device of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022571016.1U CN214013861U (en) | 2020-11-09 | 2020-11-09 | Non-full-phase protection device of circuit breaker |
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| Publication Number | Publication Date |
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| CN214013861U true CN214013861U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022571016.1U Active CN214013861U (en) | 2020-11-09 | 2020-11-09 | Non-full-phase protection device of circuit breaker |
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| CN (1) | CN214013861U (en) |
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